Unidentified photographer Construction of the subway. New York, 1915-1950. Manhattan. Chambers Street. Lexington Avenue. Southern Boulevard. Broadway. Queens Tunnel. Workers at work. Drillings. Trenches. 11 silver prints from the period. Annotations in some negatives. Numerous handwritten and typed annotations, dates on the back. Sizes : from 19 x 24 to 20 x 25 cm Unidentified photographer Construction of the underground. New York, 1915-1950. Manhattan. Chambers Street. Lexington Avenue. Southern Boulevard. Broadway. Queens Tunnel. Workers at work. Breakthroughs. Trenches. 11 vintage gelatin silver prints. Annotations in some negatives. Numerous handwritten and typed annotations, dates on versos. Dimensions: from 19 x 24 to 20 x 25 cm